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Flight Route

SeattleReykjavik

Flights from Seattle (SEA) to Reykjavik (KEF)

Timezone shift+8hDirectioneastboundFlight time7h 40mDistance5,808 kmDirect2 airlines

Route Profile

Distance

5,808 km

Fastest Flight

7h 40m

Timezone Shift

+8h

Direct Airlines

2

AlliancesStar AllianceSkyTeamOneworld
ClassesEconomyPremium EconomyBusinessFirst
Schedulesumotuwethfrsa
Aircraft
Airbus A321neo
Boeing 737 MAX 8
Boeing 757-200 (winglets)

Seattle to Reykjavik Flights

Flights from Seattle to Reykjavik are operated 15 times. Departure times vary between 14:35 and 23:25. You can fly in Y and W and J and F. The flight distance is 5,808 km (3,609 miles).

Arrival Windows

Best times to arrive for faster recovery

Best vs Worst Arrival Times in Reykjavik

Best Arrival

7AM7PM

Morning light helps you stay awake longer

Worst Arrival

9PM5AM

Arriving during your body's sleep window makes adjustment harder

The difference:choosing the right arrival window can save 1–2+ days of recovery time.

Departure Timing

Best hours to depart for jetlag recovery

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Night (0005)Morning (0611)Afternoon (1217)Evening (1823)

Arrival Strategy for Reykjavik

How to manage jetlag based on arrival time

Morning Arrival

Upon morning arrival, immediately engage with natural light and stay active. Consider a light walk or outdoor activity to help reset your internal clock and combat early arrival fatigue.

Afternoon Arrival

Afternoon arrivals should strategically time a short 20-30 minute nap to refresh without disrupting nighttime sleep, followed by mild outdoor exposure to reinforce wakefulness.

Evening Arrival

For evening arrivals, minimize bright screens, stick to a consistent sleep schedule, and use blackout curtains to manage Iceland's extended daylight and support immediate sleep adaptation.

Best Time to Visit Reykjavik

Monthly climate overview

Subpolar oceanic

Jan

3°

-2°

80mm

Feb

3°

-2°

70mm

Mar

5°

0°

65mm

Apr

7°

2°

60mm

May

11°

5°

50mm

Jun

14°

8°

45mm

Jul

15°

10°

40mm

Aug

14°

9°

50mm

Sep

11°

6°

60mm

Oct

8°

3°

70mm

Nov

5°

1°

80mm

Dec

3°

-1°

90mm

Airport Recovery Facilities

Jetlag-friendly amenities at each airport

SEA

Sleep Pods
Quiet Zones
Showers
Lounge Beds

Comfort: 3.0/10

KEF

Sleep Pods
Quiet Zones
Showers
Lounge Beds

Comfort: 2.4/10

Top Airlines

Nonstop service on this route

FI
Icelandair
14:35Airbus A321neo7h 40m
FI
Icelandair
15:40Boeing 737 MAX 87h 40m
FI
Icelandair
15:40Boeing 737 MAX 87h 40m

Related Routes

Frequently Asked Questions

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Return & Connections

KEFSEA

Return flight jetlag analysis

Popular connections via:

Seattle to Reykjavik Jetlag Recovery Guide

7-hour timezone shift eastbound · ~7.8 day recovery — departure timing tips, light exposure schedule, and day-by-day plan

See which flights minimize jetlag on this route

Compare schedules, check award seats, and optimize your arrival

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